Machine for manufacturing concrete building-blocks.



PATEN'TED FEB. 27, 1906.

W. H. MoDOWELL. MACHINF FOR MANUFACTURING CONCRETE BUILDING BLOCAPPLICATION FILED AUG. 10. 1905.

2 SHEETS-SHEET 1.

, awentoz witwaooeo PATENTED FEB. 27, 1906.

- W. H. MoDOWELL.

AOTURING CONCRETE BUILDING BL APPLICATION FILED AUG.10. 1905.

OOKS.

MACHINE FOR MANUF 2 SHEETSSHEET 2.

@RI w A M on ITED s'rArns PATENT OFFICE.

wI LIs H. CDO ELL, or AUBURN, INDIANA.

- MACHINE FOR MANUFACTURING CONCRETE BUILDING-BLOCKS.

Specification of Letters Patent.

Patentedilieb 27, 1906.

Application filed August 10. 1905. Serial No. 273,660.

lowing is a specification.

My invention pertains to certain new and useful improvements in amachine for manufacturing concrete building-blocks.

The invention contemplates an improved type of machine of this classwherein the cores are hollow and so mounted as to be moved into. and outof'the mold, the plastic composition displaced by the entrance of thecores being received on the interior of said cores,

from which it may be subsequently removed.

Further, the invention contemplates an improved mounting for the coresin order that they may be operated into and out of the mold Withoutscraping or rubbing the edges of the mold apertures, attended by thedisadvantage of wearing an uneven surfaceforming an irregular guide forthe cores.

Referring to the accompanying drawings,

' forming a part of this specification, wherein like numerals ofreference designate similar parts throughout the several views, Figure 1is a central vertical sectional view on line 1 1 of Fig. 2. Fig. 2 is atop plan view of my machine. Fig.3 isa view similar to 1', but showingthe cores as partly inserted within the mold and the pedestal of themachine broken? away. Fig. 4 is a perspective view of the core-o eratingmechanism detached from the mac e, and Fig. 5 is a perspective vliglv ofa block formed in my improved ma 0 e.

In the accompanying drawings, 1 designates a suitable table-frameworksupported by the pedestal '2. The table framework consists of twochannel-bars 3 3, arranged in spaced relation. Transverse of the barsand connected to eachof the same is a mold-base 4, the latter being ofthe requisite dimensions and having hinged, as at 5, on its upper faceone side 6 of the mold. The opposite side 7 of the mold is hinged to thebase 4, as indi cated at 8, and the ends 9 10 are hinged, as indicatedat 11 12, respectively, to the spaced bars 3 in order that they maybeswung outwardly to free themselves of the mold, in conjunction with thesides 6 7, at such times when the block being molded is in condition Ito be removed from the mold. The side 7 of tate of .are likewisepenetrated by. rods 27. Inasthe mold is engaged by a member 13, hinged,as at 14, to each ofthe bars '3 at its lower-end and at its upper endbeing providedwith operating-handles 15. Member 13' at each of its endsis provided with a projection 16,

.which is engaged by the hook-shaped catch 17 of a locking member 18,which consists,

essentially, of a bar 19, formed with slots 20,

through which pass bolts 21, securedto the end 9, of the mold. Thus alongitudinal movement-is permitted bar 19. The opposite end of bar 19 isequipped with a transverse spindle extending on opposite sides of thebar, one end of'the spindle carrying the said catch 17 and the oppositeend a butter fly-nut 23 and the handle 24, by means of which the bar 19,together with the spindle 22,, may be moved. inwardly and outwardly toengage catch 17 with projection 16, and thireby lock member 13 inengagement with si e 7. 7

It will be understood that by simply ti htening nut 23the spindle 22will be loc ed with respect to bar 19, and the member 13 will therebyberetained in immovable position. Member 13 is equipped with alongitudinal strip of metal 24, which at itsendsis formedwith catches25, adapted to engage the ends 9 10, and thereby retain the same againstoutward movement, q

The table-framework is preferably equipped withasupport 26 for thepurpose of engaging member 13, and therebyrestricting thedownwardmovement of the same. To the outer face of side 6 of the mold Isecure a pair of parallel spaced rods 27, which are securedto the mold,preferably. by means of collars 28' and set-screws 29, the collars beingborne by the side. Slidably mounted on these rods 27 5 is a cross-head28, which is formed of bar 29, whose ends are penetrated by the rods 27,

and'with extensions 30, spaced from bar: 29

and connected thereto by webs 31 and which ,4

much as extensions 30 are spaced from-the ends of bar 29, it will beobserved that arigid support is thus provided for the cores, which, aswill present y ap ear, are borne by. the cross-head. As more c earlyseen in Fi 4 of the drawings, bar 29 is provided wit twodownwardly-extending projections 31 at its ends, which are perforated toreceivef'se curing means which ass therethrough and into boss 32.,carried y the hollow cores 33. Bosses 32 are each provided with a'bolt84, to the outer or free end of which links 35 ar connected, theselinks'being joined together f at their outeriends by connecting means36,

-.which embody a sleeve interposed between the links, and the rodthreaded at both ends passing throughthe sleeve and the links andprovided with nuts (best seen in Fig. 2) in order to im art movement toconnecting means 36, and thereby to the cores, through the intermediateconnections, as s ecified. A transverse shaft 37 is employe whose endsare suitably journaled in the bars 3, as indicated at 38, and whichcarries an arm 39, rigidly related thereto and secured to the saidsleeve by connecting means 36. The shaft may be given rotary reciprocalmovement by means of a hand-lever 40, which may be secured to the endthereof, as shown in the drawings I may provide each coreat the frontends and projecting from adjacent the bottoms thereof with guide-lips ofthe form shown, which are received in 0 enings 46 in-the side 7 of themold. These ips serve to act as. a su port for the cores when theplastic materia is being filled in about the same, and, further, servein the capacities of shovels clearthe Way for the cores.

I n order to restrict the outward movement ofthe cross-head 28, as wellas to provide a means for retaining the rods 27in their pro er era-bly eo enin 49, referably having its hi hest' P g P point at the frontend ofthe core. It Wlll be observed, as shown in Fig. 3 of the drawings, thatthe cores upon entering the mold will displace such of the plasticcomposition as is dis osed in the path of the incoming coresan cause thesame to be received within the core-openings 49, from which it may besubsmkuently removed.

machine of the type 'just set forth contains but comparatively few partsand may be very readily operated. By unfastening of the locking meansthe mold ends and sides may be moved away from the block after thelatter is in a completed state to allow of the block being removed. Asthe supporting mechanism for the cores is carried directly by the mold,it will be thereby observed that the relative osition of the coreswithrespeot to the mol side is never varied, and conseuently thescraping action referred to is en tlrely avoided.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. I-ira machine of the type set forth, a

mold having openings in one side thereof, rods supported solely from oneof the mold sides, a cross-headcomprising a bar penetrated'by said rods,extensions carried by thebar and spaced from the same,-and alsopenetrated by said rods, webs connecting the said extensions to the bar,downwardly extending projections carried by the bar, cores having osses,means for securing said bosses to said projections, and means foroperating the cross-head. i

2. In a machine of the type set forth, a core having an inclined openingextending from end to end of the same, a guide-lip carrie d at the frontof the core and below the opening thereof, and a mold having an openingto receive said lip.

3. In combination with a mold, a core formed with ano' enin an elementof shoveliike form carrie I by t e core to deposit the dis laced plasticmaterial in said opening, an means to operate the core. J

In testimony whereof I afiix my signature inpresence of two subscribingwitnesses.

WILLIS Hf MCDOWELL.

I Witnesses.

M. W. ARNOLD, Jomv MILLER

